123730636 has 12 divisors (see below), whose sum is σ = 216897912. Its totient is φ = 61759808.

The previous prime is 123730619. The next prime is 123730657. The reversal of 123730636 is 636037321.

It is a junction number, because it is equal to n+sod(n) for n = 123730598 and 123730607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23710 + ... + 28453.

It is an arithmetic number, because the mean of its divisors is an integer number (18074826).

Almost surely, 2^123730636 is an apocalyptic number.

It is an amenable number.

123730636 is a deficient number, since it is larger than the sum of its proper divisors (93167276).

123730636 is a wasteful number, since it uses less digits than its factorization.

123730636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52760 (or 52758 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 31.

The square root of 123730636 is about 11123.4273495178. The cubic root of 123730636 is about 498.3017531121.

Adding to 123730636 its reverse (636037321), we get a palindrome (759767957).

The spelling of 123730636 in words is "one hundred twenty-three million, seven hundred thirty thousand, six hundred thirty-six".